package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.service.AttrGroupService;
import com.atguigu.gulimall.product.service.AttrService;
import com.atguigu.gulimall.product.vo.AttrGroupWithAttrsVo;
import com.atguigu.gulimall.product.vo.SpuItemAttrGroupVo;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

	@Autowired
	AttrService attrService;

	@Override
	public PageUtils queryPage(Map<String, Object> params) {
		IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params),
				new QueryWrapper<AttrGroupEntity>());

		return new PageUtils(page);
	}

	@Override
	public PageUtils queryPage(Map<String, Object> params, Long catelogId) {
		String key = (String) params.get("key");
		//select * from pms_attr_group where catelog_id=? and (attr_group_id=key or attr_group_name like %key%)
		QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<AttrGroupEntity>();
		if (!StringUtils.isEmpty(key)) {
			wrapper.and((obj) -> {
				obj.eq("attr_group_id", key).or().like("attr_group_name", key);
			});
		}

		if (catelogId == 0) {
			IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params), wrapper);
			return new PageUtils(page);
		} else {
			wrapper.eq("catelog_id", catelogId);
			IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params), wrapper);
			return new PageUtils(page);
		}

	}

	/**
	 * 根据分类id查出所有的分组以及这些组里面的属性
	 *
	 * @param catelogId
	 * @return
	 */
	@Override
	public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrsByCatelogId(Long catelogId) {
		//com.atguigu.gulimall.product.vo
		//1、查询分组信息
		List<AttrGroupEntity> attrGroupEntities = this.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id",
				catelogId));

		//2、查询所有属性
		List<AttrGroupWithAttrsVo> collect = attrGroupEntities.stream().map(group -> {
			AttrGroupWithAttrsVo attrsVo = new AttrGroupWithAttrsVo();
			BeanUtils.copyProperties(group, attrsVo);//先把group里面的分组信息拷贝到agwaVO
			List<AttrEntity> attrs = attrService.getRelationAttr(attrsVo.getAttrGroupId());//调用attrService
			// 里的获取属性方法，这个方法是先通过groupID获取attrID集合,在调用ServiceImpl封装好的listByIds（就是baseMapper里的selectBatchIds）查询出所有属性
			attrsVo.setAttrs(attrs);
			return attrsVo;
		}).collect(Collectors.toList());

		return collect;


	}

	@Override
	public List<SpuItemAttrGroupVo> getAttrGroupWithAttrsBySpuId(Long spuId, Long catalogId) {
		//1、查出当前spu对应的所有属性的分组信息以及当前分组下的所有属性对应的值
		AttrGroupDao baseMapper = this.getBaseMapper();
		List<SpuItemAttrGroupVo> vos = baseMapper.getAttrGroupWithAttrsBySpuId(spuId, catalogId);

		return vos;
	}

}